Iproved device for



Darren Salaires lenig? i enr trice.

A. SAGE, OF MEMPHIS, MICHIGAN.

LCN/@ DEVECE FOR Ftllhl@ YEAST.

To @ZZ whom, z'z; may concern:

Beit known that I, A. A. SAGE, ot' Memphis, in the county of Macomb and State ot' Michig in, have invented a new and useful Apparatus or Device for Raising Yeast, and which I term a Yeast-Riser 5 and I do hereby declare that the following` is a full, clear, and eXactdescription of the same, reference being had to the accompanying drawing, making a part of this speciiication, said drawing being a vertical central section ot' my invention.

The object of this invention is to obtain a simple andeeonomieal apparatus or device, by Which yeast may be raised without the aid o1" a fire, and thereby obviate the trouble and inconvenience ot' a iire in warm weather for the purpose specified.

- To this end the invention consists in the em- 1 l yinent or use ot' a vessel or cup, in which the yeast, prepared in the usual way, is placed, said vessel or cup being placed within a vessel or cup of larger diameter, and the latter permanently secured within a ease provided with double walls and considerably larger in diameter than the vessel or cup which contains the yeasteup, all being arranged in such a manner as to accomplish the result with the aid of hot water, as here inafter described.

To enable those shillcd in the art to fully understand and construct my invention, I will proceed to describe it.

A represents a case or vessel, which may be ofeylindrieal form and constructed or" sheet metal, with double walls, having a dead-air space, a, between them. B is the cover ot' the oase or vessel.

Within the ease or vessel A there is permanently secured a cup or vessel, C, which has a single wall only, and is considerably smaller in diameter than the case or vessel A, and within the cup or vessel C there is placed a cup or vessel, D, which is somewhat smaller in diameter than U, and is not in any Way attached either to A or G, it being loose, so as to be capable of being removed from O and tted therein at will. rIhe cups or vessels C D are not provided with covers.

rlhe appa ratus or device is used as follows lhercmovable cup or vessel D contaii s the yeast, which is prepared in the usual Way, and the cup or vessel (l has a quantity of tepid or milk-warm water poured into it. The cup or vessel D is then placed in G, and the ease A is then nearly tilledwith water at nearly the boiling temperature. The lid or cover .B is then placed on A, and the water inA soon increases the heat of the Water in C, the radiation ot' heat from A being retarded by the double walls. Thus the yeast in D will be subjected to a proper temperature a sufficient length ot' iizne to cause it to rise, as it is commonly termed. The outer wall of the ease A may have a small hole made init at its upper part to admit of the escape of the rarefled air.

By this simple and economical device a re is avoided, which is a great trouble and at tended with considerable inconvenience in summer. All that is required is to set the device in the evening on retiring and the yeast will be ready for use in the morning.

Having thus described 1ny invention, What I claim as new, and desire to seeureby Letters Patent, is-

An apparatus or device for raising yeast, composed of the case or Vessel A, provided with double Walls, in connection with the cups or vessels C D, placed within A, and all arranged substantially as specified.

A. A. SAGE.

Witnesses:

C. D. STARR, 0. GRANGER. 

